Environment-dependent nanomorphology of TiN: The influence of surface vacancies

Taehun Lee, Bernard Delley, Catherine Stampfl, Aloysius Soon

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this work, we present density-functional theory calculations to investigate the surface properties of TiN as a function of surface orientation and termination, as well as the influence of surface defects for various surface defect concentrations. We calculate both the surface energies (including vacancy formation) as a function of the nitrogen chemical potential, and plot the first-principles derived equilibrium crystal shape (ECS) under different growth conditions. We find that surface defects can considerably change the derived ECS of TiN (especially under nitrogen-lean conditions), highlighting the importance of surface defect consideration in modeling nanoparticle morphology.

Original languageEnglish
Pages (from-to)5183-5188
Number of pages6
JournalNanoscale
Volume4
Issue number16
DOIs
Publication statusPublished - 2012 Aug 21

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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